physical education. n. (Education) training and practice in sports, gymnastics, etc, as in schools and colleges. Abbreviation: PE. physâ²ical educaâ²tion. n. instruction in sports, exercise, and hygiene, esp. as part of a school or college program.
3. Stress/injury. Stress on the tissues or any type of injury in the mouth can cause canker sores. Since the sores are actually tiny ulcers, they can be caused by any kind of hard brushing or eating something that can cause bruises or lead to tissue inflammation in the mouth.
The most common causes of a sore mouth would include the following. 1. Drinking lots of hot liquids. Essentially this would just be a burn of the roof of the mouth and it could be fixed by staying away from the really hot liquids or foods. 2. Smoking or chewing tobacco. Tobacco products are very irritating to the mouth!